A blogger, Joel Watts, a theology student has come up with a great passage from the Old Testament that can be quite the dirge against literalist creationists. He noted in Jeremiah 31:35-6 that God says he would not circumvent the regularity of nature lest he end his covenant with his people Israel. Now, he doesn't believe that one should take the whole thing literally, as there are miracles in the Bible, but that's the whole point! If you are a literalist, this passage will contradict a miraculous creation; if you want a miraculous creation, you have to not be a literalist.
Will this convince any Young Earth Creationists? I doubt it, but it is one more example of why students of the Bible are so much more interesting than those that only act like they are Bible lovers.